Seveso is a borough of Northern Italy, in the Region of Lombardy. It has been especially known since an industrial accident occurred on July 10th, 1976, when a dioxin cloud spread in the area after the explosion of a chemical plant.
The term « Seveso » refers since then to the European « Seveso » Directive which requires a.o. the identification of industrial establishments with major risks.
A Seveso establishment is an establishment which has an activity linked to handling, manufacturing, using or storing dangerous substances (i.e. refineries, petrochemical sites, oil depots or explosives depots).